Let's just say that in certain contexts I expand my usage to include trans woman as well as biological women.
Your usage depends on your definition.
No, we can't all have a different one. A definition is only valid if people use it to communicate.
You distinctly said your definition cam be different than mine. So we can't really communicate if all definitions are different. And if yours I'd different than mine we can't communicate.
And in a scientific context, that is the definition you use. It does not preclude other definitions in other contexts and in fact such multiple usages are quite common.
You are referring to usage not definition.
Some words have definitions that are set in objective reality. Like woman. Can you use it when referencing a man or a male child? If you want to I suppose. But if you do you have just lost the meaning and made rhe word meaningless.
As I've said, definitions must be shared for words to be communicative.
Can you define cat anyway you want and it's a valid definition? Can everyone define it any way they want and it's valid?
Sure, but you might not be able to communicate with anybody about it unless they know your definitions.
Yeah anyone can define any word any way they want. There is nothing to prevent it. As you say communication requires definitions that we all understand for communication. Can I use rhe word woman when referring to a male child? Yes I could. Would we be communication and understanding
what we are talking about? No.
If I asked you to buy me an apple you would know exactly what I meant. You wouldn't go to the store and buy me a gallon of milk, or a loaf of bread or a grape. But somehow if I asked you to find a woman, you wouldn't have any idea what to find. Might be a biological woman or I. Might me a trans woman or it might be a man who says he's a woman. You have lost rhe meaning of woman.
Ask them. I don't mean listen to trans activists or right-wing polemicists. I don't think rando media of any kind will give you the answer. You won't really have a dog in this fight until there are trans people around you, at work or at school and you have to start worrying about pronouns. Get to know a trans work or school colleague as a person, eventually they'll open up and tell you what they feel. It's easy.
Im not going to let you dodge that. When you say to ask them, then you just have done what I claimed you have done. Made word based upon am individuals personal definition. Asking means I don't really know what the definition is. In otherworld there is no definition except what each individual defines.for themselves. You've made rhe word meaningless.
The word cat is not meaningless. If everyone in my town has a different meaning for cat, then it's meaningless.
But car does have a meaning doesn't it. When I use rhe word cat you know what I am talking about. You know what a cat is. If I said my neighbor has a cat named whiskers, would.you ask me what a cat is?
What kind of nonsense would be for me.to.say I dint know what a cat is, you'll have to ask my neighbor what his definition of cat is.